Overview
The TDA7803A-ZST, produced by STMicroelectronics, is a single-chip quad bridge amplifier designed for high-efficiency automotive audio applications. It integrates a full D/A converter, digital input for direct connection to I2S or TDM, and powerful MOSFET output stages. This device is built using advanced BCD technology and is AEC-Q100 qualified, ensuring reliability and performance in automotive environments.
The TDA7803A-ZST boasts an outstanding 115 dB S/N ratio and more than 110 dB of dynamic range, making it suitable for high-quality audio systems. It also features an innovative high-efficiency concept that reduces power dissipation by up to 50% compared to conventional class AB solutions, especially beneficial for class-G systems and 'start-stop' battery profiles.
Key Specifications
| Specification | Value |
|---|---|
| Dynamic Range | 115 dB (A-weighted) |
| Output Power Capability | 4 x 27 W @ 4 Ω, 14.4 V, 1 kHz, THD = 10% 4 x 47 W @ 2 Ω, 14.4 V, 1 kHz, THD = 10% |
| Sample Rates | 44.1 kHz, 48 kHz, 96 kHz, 192 kHz |
| Digital Processing | 24-bit |
| Supply Voltage Range | Down to 6 V for 'start-stop' compatibility |
| Package Options | PowerSO 36, Flexiwatt 27 |
| I2C Bus | Full I2C bus driving 1.8V/3.3V with four addresses selectable |
| Thermal Protection | Yes |
| Operating Temperature | -40°C to 150°C |
Key Features
- AEC-Q100 qualified for automotive reliability
- SB-I (SB-improved) high efficiency operation
- Parallel mode function availability
- Flexible mode control with independent front/rear play/mute
- Selectable digital gains for very-low noise line-out function
- Digital diagnostic with DC and AC load detections
- Start-stop compatibility (operation down to 6V)
- Flexible serial data port (I2S standard, TDM 4Ch, TDM 8Ch, TDM 16ch)
- Offset detector and independent front/rear clipping detector
- Programmable diagnostic pin and CMOS compatible enable pin
- Thermal protection and pop-free in mute to play transitions
Applications
The TDA7803A-ZST is designed for high-performance automotive audio systems, particularly in vehicles that require efficient and reliable audio amplification. It is suitable for:
- Automotive infotainment systems
- Car audio amplifiers
- Class-G audio systems
- 'Start-stop' battery profile compatible systems
Q & A
- What is the dynamic range of the TDA7803A-ZST?
The dynamic range of the TDA7803A-ZST is 115 dB (A-weighted).
- What are the output power capabilities of the TDA7803A-ZST?
The TDA7803A-ZST can deliver 4 x 27 W @ 4 Ω and 4 x 47 W @ 2 Ω at 14.4 V, 1 kHz, with THD = 10%.
- What sample rates does the TDA7803A-ZST support?
The TDA7803A-ZST supports sample rates of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz.
- Is the TDA7803A-ZST compatible with 'start-stop' battery profiles?
Yes, the TDA7803A-ZST is compatible with 'start-stop' battery profiles and can operate down to 6 V.
- What types of digital inputs does the TDA7803A-ZST support?
The TDA7803A-ZST supports I2S standard, TDM 4Ch, TDM 8Ch, and TDM 16ch (8+8ch) digital inputs.
- Does the TDA7803A-ZST have thermal protection?
Yes, the TDA7803A-ZST includes thermal protection.
- What is the operating temperature range of the TDA7803A-ZST?
The operating temperature range of the TDA7803A-ZST is -40°C to 150°C.
- Is the TDA7803A-ZST AEC-Q100 qualified?
Yes, the TDA7803A-ZST is AEC-Q100 qualified for automotive reliability.
- What are the package options for the TDA7803A-ZST?
The TDA7803A-ZST is available in PowerSO 36 and Flexiwatt 27 packages.
- Does the TDA7803A-ZST support I2C bus communication?
Yes, the TDA7803A-ZST supports full I2C bus driving 1.8V/3.3V with four addresses selectable.
